Open house, more commonly called open door is a public relations term relating to complete disclosure and free access to information. This philosophy rejects media spin and relies on total and immediate honesty.

the soft target of any public relations campaign

I think you mean to ask "what is the difference between public relations and employee relations?" In essence, there is not a difference. Employee relations is a specialty, a niche within public relations.

Define and explain public relations as given by Sam Black. Define and explain public relations as given by Sam Black. Define and explain public relations as given by Sam Black. Define and explain public relations as given by Sam Black. Define and explain public relations as given by Sam Black.

Doug Newsom has written:

'Bridging the Gaps in Global Communication'

'This is PR' -- subject(s): Public relations

'Public relations writing' -- subject(s): Public relations, Authorship, Business writing

'This is PR' -- subject(s): Public relations, Relations publiques

'Public relations writing'